Home / 818,576.80-1,227,865.20-257,538.40

Finding the Fourth Proportional to 818,576.80, 1,227,865.20 and 257,538.40

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Solution

The fourth proportional to 818,576.80, 1,227,865.20 and 257,538.40 is: 386,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,576.80 : 1,227,865.20 = 257,538.40 : x
  2. Step 2: Convert to fraction form
    818,576.80/1,227,865.20 = 257,538.40/x
  3. Step 3: Cross multiply
    818,576.80x = 1,227,865.20 × 257,538.40
  4. Step 4: Simplify right side
    818,576.80x = 316,222,439,023.68
  5. Step 5: Solve for x
    x = 316,222,439,023.68/818,576.80
  6. Step 6: Final answer
    x = 386,307.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.